Chem 145D PreLab Gas Laws Name ________________________
                                                        LAB Section Day & Time ______________
Hand in before the bell rings in lab or you will not be allowed into lab.
1. What is Boyles Law? Charles' Law? Avogadro's Law? Explain them in everyday language.
 
 
 
 
 
 

2. Using the ideal gas law, what is the volume of 2 moles of a gas that is at 1.2 atm and 35 °C?
 
 
 
 
 
 
 

3. If the density of the above gas is1.964 g/liter at STP, what is the formula and molecular weight of the gas if it contains just C and O?
 
 
 
 
 
 
 
 

4. What is the volume of 1 liter of ideal gas if it changes from 25 °C to 50 °C?
 
 
 
 
 
 

5. What is the new pressure of a balloon that starts at 760 torr that changes from 5 liters to 1 liter?
 
 
 
 
  1. 6.  Using Dalton’s Law of partial pressures, how many liters of Ar are there in 100 cubic feet of air? Do on the back.